Seiko Cal. 3818 - 685

This Spring Drive model from 1975 features a 42mm Two-Tone case. The Fixed bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-03eb75832daf]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

9.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Champagne

Jewels

23j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1975

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